I see what you mean about CL over there...yikes!?!?!
If you have your mind set on a boat, then you should get a boat. But, a sit on top kayak is the only way to go for fishing from a kayak, IMO. $500-600 will get you a good, new 12' sit on top. Plenty of space for storage, and pretty stable. I have fished, duck hunted, and bow fished off of mine. Standing up on it and shooting a bow is tricky, but not terribly challenging...t would be better if it was a little bit wider. If it were me, I would tether my kid's boat to mine and drag him along if he had trouble keeping up. There are plenty of tie-down points for that or securing gear. Mine is a 12' Ascend. Just something to think about.
http://i.imgur.com/wxj6Jy3h.jpg